Washing machine



May 24, 1921. 1,629,958

H. W. MTCHELL WASHING I IAcHINB' Filed July 18'. 1924 Patented May 24,1927.

HARRY w. MITCHELL, or CLEVELAND, on PARTNERSHIP 'ooNsIsrING or GEORGE sq1,629,958 T OFFICE Io, ASSIGNOR 'IO e; RivmroHELL & son, A

g F. *MITCHELL, GEORGE-R. MITCHELL, AND fiARRY WQ MITCHELL, OFCLEVELAND, OHIO. s i

WASHING MACHINE.

Appli'c-ationtfil ed m 18,1924. Serial No. 726,857.

This invention relates to washing machines for household laundry'work oi-the type in which a rotary fluid tight cylinder forms the vcontainerfor the cleansing liquid as well as for thematerial to be cleansed,

the present invention being an, improvement upon the machine *disclosedin'my co-pending application Serial: No. 709,402, filed 'April28,1924-.

The application above referred to provides means for automaticallyrelieving the cylinder of internal gas pressure during the operationthereof; this bemg accomplish-ed by means ofa pressure relief valvewhich i V liquids will at times therefrom. i I

- suds within the drums valve; Fig. 3 shows ovat on.

isautomatically operated during each revolution of the drum to :permitescape of gases that small quantities of escape through the reexcessivequantity of It has been found lief valve due to an It the object of thepresent invention to provide means for collecting any such liquid whichmay escape through the relief valve and prevent the dripping of suchliquid from the -head of the drum to the The following description andaccompanying drawings set forth in. detail certain means embodying theinvention the disclosed means, however, constituting but one of thevarious'mechanical forms in which theprinciple of the invention may beemployed. a

Reference should be hadto the accompanying drawings forming a part ofthis specification in which Fig. lis a side elevation of awashingmachine embodying the 2 is e a fragmentary view showing an axialsection through the relief the relief valve in ele- Referring to theaccompanying drawings,

y the Washing machine consists of a suitable supporting frame 1 in whichis mounted a horizontally disposed drum 2, which is supa "the inner sideof the ported at'both ends in the .frameby means of trunnions 3 and 4:,the drum being operated through suitable gearing in the gear casing 5.The drum 2 is fluid tight and forms a container for the cleansing liquidand also for the articles being washed. On

drum a series of air trapping chambers are 1J-ributed that the chambersfilled with water during passage through the liquid and completelydischarge the with *air during cylindrical wall of the formed b arcuateperforated partition plates 6. The drum will be supplied with uid toandduring rotation of the drum the peripheral air chambers become filledwith water, while passing through the liquid and discharge the waterduring their passage above the surface of the liquid. in the plates 6are so proportioned and diswater and becomefilled their passage abovethe level of the liquid while their passage beneath the level of theliquid displaces the air, therein causing the air to ticles of clothingin the-liquid and during the of the liquid the streams of liquidaredisare completely bubble up throughithe liquid and are The perforationsv charged downwardly;from the, chamber-sf The currents of air risingfrom the air chambers through the liquid tend toforce the material inthe liquid upwardly andthis upward 'movementyisv counteracted by thestreams of water flm ing has attached thereto a valve casing 8 whichopens to the interior of the drum, thevalve 8 being provided with aconical valve seat 9 so a by gravity-fronrthe I chambers above thesurface of the liquid. 1 .th'e-liquid are thus upon its inner .end. iThe casing i8 carries .a a

valve 10 which engagesthe seat 9 and closes the opening into the drum,the valve: 10 being tends the casing 8 which is provided with a gland 13to prevent escape of liquid. The valve 10 valve is mounted is a cam 16,

provided withfa stem 11 which exthrough a boss 12 in the outer wall of iis interposed beforming a container for a body of the drum. The cam 16serves to automatically open the valve during each revolution of thedrum to allow escape of gases therefrom thereby preventing excessivepressure within the drum.

A drain pipe 17 is connected to the casing 8 outside the head of thedrum and extends inwardly therefrom toward the axis of the drum, theinner discharge end 18 of the drain pipe 17 being bent out ardly fromthe head of the drum. The discharge end 18 of the drain pipe projectsinto an annular collecting member 19 which is fixed to the frameadjacent the head of the drum. The annular collecting member 19 ismounted in a vertical position and coaxially with respect to the axis ofthe drum. The collecting member 19 is formed with inner and outeroppositely facing channels 20 and 21 projecting inwardly toward the headof the drum, the inner annular channel 20 surrounding the trunniontherein and facing outwardly and the outer channel 21 being spacedoutwardly from the inner channel 20 and facing in 'ardly. The spacedchannel members 20 and 21 provide between them an annular opening intowhich the discharge end 18 of the drain pipe projects. Liquid dischargedfrom the drain pipe 17 against the outer side of the collecting memberor into the inner channel 20 and flows by gravity into the outer channel21 which is wider than the inner channel 20. A drain pipe 22 extendsfrom the lower portion of the collecting channel 21 and extends toadjacent the bottom of the frame 1 so that liquid deposited in thecollecting member 19 may be discharged into a suitable collectingreceptacle beneath the machine.

Having described my invention, I claim:

1. A washing machine having a rotatably mounted substantially fluidtight drum forming a container for a body of cleansing liquid andarticles to be cleansed, a pressure relief valve carried by the drum,means for operating the valve during rotation of the drum to permit estape of gases therefrom, and means associated with the valve forcollecting any liquid escaping through the valve. e

2. A washing machine having a rotatably mounted substantially fluidtight drum of cleansing liquid and articles to be cleansed, a pressurerelief valve carried by the drum, means for operating the valve duringrotation of the drum to permit escape of gases from the interiorthereof, a casing enclosing said valve upon the exterior of the drum,and means for draining liquid from said casing.

3. A washing machine having a rotatably mounted substantially fluidtight drum forming a container for a body of cleansing liquid andarticles to be cleansed, a relief valve in an end wall of the drum,means for operating the valve during rotation of the drum to permitescape of gases therefrom, a casing enclosing said valve upon theexterior of the drum, a drain pipe connected to said chamber, and astationary annular collecting member into which said drain pipedischarges.

l. A washing machine having a frame in which is rotatably mounted asubstantially fluid tight drum forn'iing a container for a body ofcleansing fluid and articles to he cleansed, said drum having a reliefvalve in an end wall thereof adapted to be opened to permit escape ofgases therefrom, a casing enclosing the valve upon the outside of thedrum, a drain pipe extending from said casing to ard the axis of thedrum, and a stationary collecting chamber fixed to the casing coaxiallywith the drum, said collecting chamber having a central opening intowhich said drain pipe extends.

A washing machine having a frame in which is rotatably mounted asubstantially fluid tight drum forming a container for a body ofcleansing fluid and articles to he cleansed, said drum having a reliefvalve in an end wall thereof adapted to be opened to permit escape ofgases from the drum, a casing enclosing said valve a drain pipeextending from said casing toward the axis of said drum, the inneroutlet end of said pipe being bent outwardly from the drum, a collectingmember fixed to the frame and having an annular inwardly facing outerchannel and an annular outwardly facing channel within the outer channelbetween which channels the outlet end of the pipe extends. and a drainconduit connected to said fixed collecting member.

In testimony whereof, I hereunto signature.

a tlix my HARRY 1V. MITCHELL.

